The best rejoinder to this might be the Founder's Fund manifesto, which originally started with, "We wanted flying cars, instead we got 140 characters."

That specific phrase has since disappeared. But it illustrates that we can enjoy—even invest in—certain innovations like social media, while bemoaning the lack of innovation in other spaces (eg transportation in this example).

Here's the modified version of the manifesto:

http://www.foundersfund.com/the-future/